Re: 50kV xfmr

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: Brett Miller <brmtesla2-at-yahoo-dot-com> 

Ben,

For a wicked jacob's ladder, I would suggest putting
together a quad mot stack in oil with a nice container
on casters.  Or if you can afford a pig...

-Brett


--- Tesla list <tesla-at-pupman-dot-com> wrote:
 > Original poster: "Hydrogen18"
 > <hydrogen18-at-bellsouth-dot-net>
 >
 > I recommend you rip the thing up until you get to
 > the 25000 volt output(or
 > whatever HV AC it has out). Its just so hard to
 > trouble shoot something if
 > it isnt exposed. The doubler could die at any time.
 > I dont know how much of
 > a jacobs ladder would be at 5 ma. Why not just use a
 > 15/30 NST?
 >
 > ---Eric
 > ----- Original Message -----
 > From: "Tesla list" <tesla-at-pupman-dot-com>
 > To: <tesla-at-pupman-dot-com>
 > Sent: Tuesday, July 06, 2004 8:27 PM
 > Subject: 50kV xfmr
 >
 >
 >  > Original poster: Ben McMillen
 > <spoonman534-at-yahoo-dot-com>
 >  >
 >  > Hi all,
 >  >     I had the wonderful experience of being given
 > a 50kV transformer new
 > in
 >  > the box by a guy up in the engineering building
 > on campus. It was given to
 >  > him by a prof who used to work in a failure
 > testing lab before he taught
 >  > and has since retired. What I'd like to do is
 > make a large jacobs ladder
 > so
 >  > that the freshman have some eye candy when they
 > come to visit. The specs
 >  > are as follows:
 >  >
 >  > The unit is made by Plastic Capacitors, Inc. and
 > is encased in a metal box
 >  > (almost thought it was a large HV cap when I
 > found it) about 6" X  8", and
 >  > about 12" tall. There are two 6" long ceramic
 > insulators on the top, which
 >  > end with aluminum golf ball sized corona balls.
 > The inputs are also on the
 >  > top, slightly to one of the longer edges.
 >  >
 >  > The part number is HV500-502M, and the spec sheet
 > in the box says it'll
 > put
 >  > out 50Kv with the aid of a built in full wave
 > doubler (so it's 50Kv
 >  > DC)..Max output is 5mA. It's got a 500K internal
 > bleeder, and approximate
 >  > output resistance is 1.2Meg ohms..
 >  >
 >  > I'm guessing that this will have to be current
 > limited to start, however I
 >  > remember hearing that HV trannys with a doubler
 > in them don't like to be
 >  > shorted as it destroys the bridge. Will that be a
 > problem here??
 >  >
 >  > Thanks for any help!!
 >  >
 >  > Coiling In Pittsburgh
 >  > Ben McMillen
 >  >
 >  >
 >
 >
 >